Kris Jenner celebrated her 59th birthday again on Friday, this time at a big bash at the Las Vegas nightclub 1 OAK, along with her new beau!

Wearing a long sleeve, semi-sheer black and white mini dress, the Keeping Up With the Kardashians matriarch and momager cozied up to boyfriend Corey Gamble, 33, who she began dating this past summer, just before she filed for divorce from longtime estranged husband Bruce Jenner.

This marked their first official public appearance together. Earlier this week, E! News confirmed she is dating Gamble, following romance rumors, and the two were also spotted walking together and holding hands in Los Angeles. Kris had remained coy when asked about Gamble in a phone interview with E! News.

The event took place two days after her actual birthday, which she had celebrated at Disneyland with Kourt and grandson Mason Disick (Kris wore a Minnie Mouse onesie!).

However, Kourtney's partner and Mason's dad, Scott Disick, who has often poked fun at Kris on Keeping Up With the Kardashians, did attend the Las Vegas bash and was photographed hugging the matriarch! Awww!! Kris told E! News that Scott talked her into having the party. 1 Oak is located at the Mirage Resort Hotel and Casino, which also houses one of the Kardashian family's stores, Kardashian Khaos.

And the Kardashian family still played a part at Kris's birthday party; Several of what appeared to be the club's go-go dancers, clad in black crop tops, miniskirts, garters and fishnet stockings, donned giant cardboard masks with photos of the reality stars while posing for pics with Kris and several friends, including frequent Keeping Up With the Kardashians co-star Jonathan Cheban. (See more photos from the party!)

Denise Truscello/WireImage

The Jenner sisters recently flew to Chicago for a meet-and-greet event at a shopping mall to promote their new PacSun collection. Khloé, who is in London with Kim for another event, shared a message for her mom on Instagram.

"I miss you guys!!! I hope you're having fun in Vegas," she said, alongside a pic showing the cardboard doppelgangers. "Lol I'm laughing so hard, this is funny!!"